Official NHA Assessment

Race 2: 4RACING.TV MAIDEN PLATE (For Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Bob Lee Swagger
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
8 / 9
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    Bob Lee Swagger      4    58.0    1    0.00     4.0   70    70           70    +0
2    Maldano              3    58.0    2    0.50     7.0   64    69           69    +5
3    Fujisan              4    58.0    3    0.60     4.0   60    75           75    +15
4    Give Us A Smile      2    58.0    4    1.35     0.0   77    81           81    +4
5    Regazzo Grande       2    58.0    5    2.10     0.0   59    81           81    +22
6    Big Five             3    60.0    6    4.35     7.0   57    68           68    +11
7    Master Of Defense    3    60.0    7    7.60     7.0   60    68           68    +8
8    Fly Like A Falcon    2    55.0    8    12.85    0.0   -     72           72    +72
99   Shunmyo              3    60.0    99   0.00     7.0   -     68           68    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Bob Lee Swagger Line 70 53 70 -17 4.0
2 Maldano 64 60 69 -9 7.0 -
3 Fujisan 60 60 75 -15 4.0 -
4 Give Us A Smile 77 67 81 -14 0.0 -
5 Regazzo Grande 59 72 81 -9 0.0 -
6 Big Five 57 53 68 -15 7.0 -
7 Master Of Defense 60 63 68 -5 7.0 -
8 Fly Like A Falcon - 58 72 -14 0.0 -
99 Shunmyo - 45 68 -23 7.0 -
Assessment Methodology
Calculation Steps:
  1. Identify Line Horse - consistent performer used as reference
  2. Calculate WFA Allowance based on age, distance, and month
  3. Apply Drag Adjustment for beaten margin
  4. Calculate Actual Weight Performance:
    Weight - Drag - WFA
  5. Compare to Line Horse to determine race rating
  6. Apply special rules (maiden caps, layoff allowance)
Key Formulas:
  • Drag Effect: Varies by distance (see Benchmarks page)
  • 1 length ≈ 1kg at 1 mile (1600m)
  • WFA Scale: Based on Admiral Rous's 1855 table
  • Rating Points: 1kg = 2 rating points